scotland yard released a statement saying that the steady leaks to the media are getting in the way of their investigation. but scotland yard itself is accused of being involved in this scandal for taking bribes, as well as turning a blind eye to the news of the world's tactics. >>> leon panetta has been to iraq and afghanistan before but never as defense secretary, that happened this weekend, he's only been on the job for 11 days and already those traveling with him say there's been an unmistakable change at the top at the pentagon. our pentagon correspondent jim miklaszewski is traveling with him and tonight has an exclusive interview with the secretary. >> reporter: the new secretary of defense leon panetta surveyed iraq from a u.s. military helicopter today and was troubled by the landscape below. u.s. forces here, set to withdraw by the end of the year, are once again caught up in a war. 15 troops were killed last month by roadside bombs. panetta told a gathering of soldiers today the killing must end. >> my first responsibility as secretary of defense is to make damned sure that